This is the mail system at host smtp1.osuosl.org.

I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can delete your own text from the attached returned message.

The mail system

cacciola.viola@icternodisola.edu.it: host ASPMX.L.GOOGLE.COM[142.251.183.27] said: 550-5.7.1 La tua mail è stata respinta perché viola i criteri dell'organizzazi 550 5.7.1 one - gcdp e9e14a558f8ab-3a0c88a7032si819315ab.114 - gsmtp (in reply to end of DATA command)